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JNJ-78934804

Phase 3

Colitis, Ulcerative | Small molecule | Gastrointestinal |Johnson & Johnson|Last Updated: Aug 28, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment644

FDA Designations

No designations recorded

Clinical trial landscape

JNJ-78934804 · 2 trials · 2 indications

Phase 3 2
NCT07577856A Study of JNJ-78934804 in Participants With Moderately to Severely Active Ulcerative ColitisColitis, Ulcerative
RECRUITING644 Analytics
NCT07577843A Study of JNJ-78934804 in Participants With Moderately to Severely Active Crohn's DiseaseCrohn Disease
RECRUITING460 Analytics
PHASE3RECRUITING
A Study of JNJ-78934804 in Participants With Moderately to Severely Active Ulcerative Colitis
Colitis, UlcerativeUnlock trial analytics
PHASE3RECRUITING
A Study of JNJ-78934804 in Participants With Moderately to Severely Active Crohn's Disease
Crohn DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants in Clinical Remission at Week 48
At Week 48

Clinical remission is defined as an stool frequency (SF) subscore of 0 or 1, rectal bleeding (RB) subscore of 0, and an endoscopy subscore of 0 or 1.

Co-Primary: Percentage of Participants with Clinical Remission at Week 48
At Week 48

Clinical remission is defined as a Crohn's Disease Activity Index (CDAI) score less than (\<) 150. CDAI scores range from 0 to approximately 600. Higher score indicates higher disease activity.

Co-Primary: Percentage of Participants with Endoscopic Remission at Week 48
At Week 48

Endoscopic remission is defined as a Simple Endoscopic Score for Crohn's Disease (SES-CD) score of less than or equal to (\<=) 4 with at least a 2-point reduction from baseline and no subscore greater than (\>) 1 in any individual component. The SES-CD is based on the evaluation of 4 endoscopic components (presence/size of ulcers, proportion of mucosal surface covered by ulcers, proportion of mucosal surface affected by any lesions, and presence/type of narrowing/strictures) across 5 ileocolonic segments. SES-CD score can range from 0 to 56. Higher scores indicating more severe disease.

Secondary Endpoints

Percentage of Participants with Endoscopic Improvement at Week 48
At Week 48
Percentage of Participants with Corticosteroid-free (90 day) Clinical Remission at Week 48
At Week 48
Percentage of Participants Achieving a Combination of Histologic Remission and Endoscopic Improvement at Week 48
At Week 48
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
JNJ-78934804EXPERIMENTALParticipants will receive JNJ-78934804 induction dose at Weeks 0, 4, and 8 followed by JNJ-78934804 maintenance dose, once every 4 weeks (q4w) starting at Week 12. All participants who meet the rescue criteria will receive JNJ-78934804 induction dose at Weeks 16, 20, and 24 followed by JNJ-78934804 maintenance dose q4w starting at Week 28. Participants who complete double-blind (DB) treatment phase (Week 48) and benefit from continued study intervention in the opinion of the investigator will have the opportunity to enter the long-term extension (LTE) phase.
GuselkumabACTIVE_COMPARATORParticipants with moderately to severely active UC will receive guselkumab induction dose at Weeks 0, 4, and 8 followed by guselkumab maintenance dose q4w starting at Week 12. All participants who meet the rescue criteria will receive JNJ-78934804 induction dose at Weeks 16, 20, and 24 followed by JNJ-78934804 maintenance dose q4w starting at Week 28. Participants who complete DB treatment phase (Week 48) and benefit from continued study intervention in the opinion of the investigator will have the opportunity to enter the LTE phase.

Interventions

NameTypeDescription
JNJ-78934804DRUGJNJ-78934804 will be administered subcutaneously.
GuselkumabDRUGGuselkumab will be administered subcutaneously.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites170

Inclusion criteria: * Diagnosis of ulcerative colitis (UC) established at least 12 weeks before screening including both endoscopic evidence and a histopathology report consistent with a diagnosis of UC. * Moderately to severely active UC defined as baseline (Week 0) modified Mayo score of 5 to 9, ...

Countries:United StatesArgentinaAustraliaBelgiumBrazilBulgariaCanadaChinaCzechiaDenmarkFranceGermanyIndiaIsraelJapanMalaysiaNetherlandsNorwayPolandPortugalSlovakiaSouth KoreaSpainTaiwanTurkey (Türkiye)United Kingdom
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Recent Changes (Last 90 Days)

LOWAug 28, 2026NCT07577856Completion: 2030-10-30 → 2030-10-16
LOWAug 28, 2026NCT07577843lastUpdatePostDate: changed
LOWAug 28, 2026NCT07577856Completion: 2030-10-30 → 2030-10-16
LOWAug 28, 2026NCT07577843lastUpdatePostDate: changed
LOWJul 31, 2026NCT07577856lastUpdatePostDate: changed
LOWJul 31, 2026NCT07577843lastUpdatePostDate: changed
LOWJul 31, 2026NCT07577856lastUpdatePostDate: changed
LOWJul 31, 2026NCT07577843lastUpdatePostDate: changed
LOWJul 6, 2026NCT07577856lastUpdatePostDate: changed
LOWJul 6, 2026NCT07577843lastUpdatePostDate: changed
LOWJul 6, 2026NCT07577856lastUpdatePostDate: changed
LOWJul 6, 2026NCT07577843lastUpdatePostDate: changed
LOWJun 8, 2026NCT07577856Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 8, 2026NCT07577843Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 8, 2026NCT07577856Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 8, 2026NCT07577843Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 8, 2026NCT07577856Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 8, 2026NCT07577843Status: NOT_YET_RECRUITING → RECRUITING

Frequently asked questions about JNJ-78934804

What is JNJ-78934804 used for?

JNJ-78934804 is an investigational small molecule being studied for the treatment of moderately to severely active Crohn's disease and ulcerative colitis. It is currently in Phase 3 clinical development by Johnson & Johnson for these gastrointestinal inflammatory conditions.

Who makes JNJ-78934804?

JNJ-78934804 is being developed by Johnson & Johnson, a pharmaceutical company traded on the New York Stock Exchange under the ticker symbol JNJ. The company is currently conducting Phase 3 clinical trials to evaluate the drug's safety and efficacy in patients with inflammatory bowel disease.

What phase is JNJ-78934804 in?

JNJ-78934804 is in Phase 3 clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. Johnson & Johnson is currently recruiting participants for two Phase 3 trials studying the drug in Crohn's disease and ulcerative colitis.

What clinical trials is JNJ-78934804 in?

JNJ-78934804 is being studied in two Phase 3 clinical trials. NCT07577843 is evaluating the drug in approximately 460 participants with moderately to severely active Crohn's disease. NCT07577856 is evaluating the drug in approximately 644 participants with moderately to severely active ulcerative colitis. Both trials are currently recruiting.

What is the mechanism of action of JNJ-78934804?

The mechanism of action of JNJ-78934804 has not been disclosed in available clinical trial information. It is classified as a small molecule therapeutic being developed for the treatment of inflammatory bowel diseases, including Crohn's disease and ulcerative colitis.

Is JNJ-78934804 the same as any other drug?

No alternative names for JNJ-78934804 have been disclosed. The drug is identified solely by its development code JNJ-78934804 in the clinical trial registrations for its Phase 3 studies in Crohn's disease and ulcerative colitis.